KR101833729B1 - a filter of injection device for medical use - Google Patents

Abstract

The present invention relates to a filter for filtering an injection liquid for a medical injection device. The filter can filter out lumps in a target substance injection liquid such as stem cells. According to an embodiment of the present invention, the filter for filtering an injection liquid for a medical injection device includes: a first filter housing which has injection liquid injection holes formed therein in a through shape, has a first screw unit formed on a side of the outer periphery, and has a filter space for filtering the injection liquid; an injection liquid filter member which is mounted on the filter space, filters the lumps in an arbitrary size in the injection liquid, and only lets the target substances pass therethrough by using target substance passing holes formed thereon; a supporter which has injection liquid discharging holes linked to the injection liquid injection holes, presses the injection liquid filter member mounted in the filter space, and prevents the injection liquid filter member from being released; and a second filter housing which has a second screw unit corresponding to the first screw unit on the inner periphery, supports the flange of the supporter when screw-coupling the first and second screw units, and prevents the supporter from being released from the first filter housing.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

The present invention relates to a filtration filter, and more specifically, to a filtration filter for a medical fluid injecting apparatus for filtering lumps and the like contained in a target substance infusion liquid such as stem cells.

Generally, an infusion device is used to infuse injections at a constant concentration into the muscles or blood vessels of a human or animal.

In this case, the injectable solution means a mixture of saline solution (or Ringer's solution or nutrient solution capable of human tearing) with a target drug such as a specific drug solution or stem cell.

Further, the chemical liquid may be in the form of any one of a liquid chemical, a liquid chemical mixed with two or more chemicals, and a chemical liquid in emulsion or slurry form.

Stem cells are cells capable of autolabelling and differentiation, and are largely classified into embryonic stem cells and adult stem cells. Double adult stem cells are found to be abundant in the adipose tissue and bone marrow tissue of our body.

Cells that can be easily used in hospitals nowadays are those obtained by collecting adipose tissue, enzymatically treating the cells, obtaining the stem cells obtained from the epileptic vessels, the adipose-derived stem cells obtained after further purification of the epileptogenic blood cells, And bone marrow-derived mesenchymal stem cells that can be obtained through a post-incubation process.

After the extraction process or extraction, the stem cells easily settle down (precipitate) under water due to the difference in specific gravity with water, have a high adherence to plastic, and have a property of coagulating well with each other.

Due to such stem cell characteristics, if the extracted stem cells are administered to the human body without paying heedful attention, it may lead to considerable cell loss during the injection process, and as a result, the therapeutic effect may be reduced.

In addition, when the stem cells are administered in a lump state or at a high concentration, thrombosis may be caused by blocking blood vessels, and allergy may be induced.

In addition, when an emulsion or a slurry-like substance (a substance that is not dissolved in a cell or a solution) is added, an additional process such as filtration is required for safety. And the treatment effect may be lowered.

Despite these risks, the development of infusion systems for injecting stem cells is marginal.

Although not shown in the drawings, a medical implanting apparatus according to the prior art (Korean Patent Registration No. 1640481)

A container (10) in which a space for receiving the injection liquid is formed, and a injection liquid outflow port is formed in the lower part;

An injection liquid filtration filter (40) extended to the injection liquid outlet port and for filtering the injection liquid;

A guide tube (70) extended from the bottom of the injection liquid filtration filter and providing a flow path for injecting the injection liquid;

A water level control pipe for connecting the first water level control port 18 for controlling the degree of the outside air to the outside and the second water level control port 44 formed above the water level filtration filter to communicate with each other, However,

The injection liquid filtration filter 40 has a filter housing 41 in which a filtration space for filtering the injection liquid is formed and an injection liquid filtering material 45 installed in the filter housing 41 for filtering the injection liquid .

In the process of filtrating the above-mentioned injection liquid, the lump material contained in the injection liquid is filtered, and the injection liquid filter material 45 for passing a target material such as stem cells is formed of a nylon material having a mesh structure.

As a result, the injection filtrate material 45 of the prior art can initially be filtered so that the mass of the stem cells conforms to the reference value.

On the other hand, after a certain amount of time has elapsed, the mesh structure of the infusion filtration media 45 may be easily damaged or deformed by the nature of the nylon material or the syringe pressure that injects the infusion fluid into the filter housing 41, The stem cell mass can easily penetrate the infusion fluid filter medium 45.

That is, when the concentration of the stem cells passing through the infusion liquid filter material 45 formed of nylon material is not uniform, a catastrophic medical accident may occur when the target material is injected into the human body, and the reliability or safety This leads to a problem that falls significantly.

Korean Patent Registration No. 10-1640481 (registered on July 12, 2016) discloses a medical injection device.

Therefore, the embodiment of the present invention is an injection filtration device for a medical injection device capable of uniformly filtering lumps and the like contained in an injection liquid irrespective of a syringe pressure for injecting a target substance injection solution such as stem cells into a filter housing Filter.

The embodiments of the present invention relate to an injection liquid filtration filter for a medical infusion device capable of injecting a target material such as stem cells extracted at a constant concentration into a human body to ensure reliability and safety.

In order to achieve the above and other objects of the present disclosure, according to one embodiment of the present disclosure,

A first filter housing through which an injection solution injection hole is formed, a first screw portion is formed on an outer peripheral side of the first filter housing, and a filtration space for filtering the injection solution is formed;

An injection liquid filter material which is seated in the filtration space and which forms a target material through hole for filtering a lump of an arbitrary size of the injection liquid and transmitting only a target material;

A supporter for penetrating the infusion liquid discharge hole communicating with the infusion liquid infusion hole and preventing the infusion liquid filter material mounted on the filtration space from being squeezed out;

A second threaded portion corresponding to the first threaded portion is formed on the inner circumference of the first filter housing and a flange of the supporter is screwed on the first and second threaded portions to prevent the supporter from being detached from the first filter housing And a second filter housing for injecting the liquid to be injected into the medical fluid injecting apparatus.

The embodiment of the present invention configured as described above has the following advantages.

It is possible to improve the reliability and merchantability of the injection liquid filtration filter by uniformly filtering the lumps contained in the injection liquid irrespective of the syringe pressure for injecting the injection liquid such as stem cells into the filter housing.

In addition, since a target substance such as stem cells extracted with a constant concentration can be injected into a human body, it is possible to prevent the occurrence of a fatal medical accident that occurs when the concentration of a target substance is uneven, and to maximize the therapeutic effect of stem cells .

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of an infusion filtration filter for a medical infusion device according to a preferred embodiment of the present disclosure; Fig.
FIG. 2 is an exploded perspective view of the injection liquid filtration filter for the medical injection device shown in FIG. 1,
FIG. 3 is a cross-sectional view of the injection liquid filtration filter for the medical implantation device shown in FIG. 1,
4 is a use state diagram of the injection liquid filtration filter for the medical implantation apparatus shown in Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the injection liquid filtration filter for a medical infusion device according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Referring to Figures 1 to 4, the infusion filtration filter for a medical infusion device according to one embodiment of the present disclosure comprises:

And a first screw portion 11 is formed on one side of the outer periphery of the filtration space 12. The filtration space 12 for filtering an injection liquid injected through a syringe (not shown) A first filter housing (13) in which the first filter housing (13) is formed;

A target material passage hole 14 (for example, a bottom surface of the target material passage hole) for allowing only a target material such as a stem cell to pass through is filtered by a lump of an injection liquid injected by a syringe, An infusion liquid filter material 15 in which a laser can be perforated to have a diameter of 80 to 200 mu m);

An infusion liquid discharge hole 16 communicating with the infusion liquid infusion hole 10 is formed in the interior of the filtration space 12 and the infusion liquid filter material 15 mounted on the filtration space 12 is sealed by a compression unit A supporter (17) for preventing separation by squeezing;

A second threaded portion 18 corresponding to the first threaded portion 11 is formed on the inner periphery and a flange 27 of the supporter 17 is supported when the first and second threaded portions 11, And a second filter housing (19) for preventing the supporter (17) from being detached from the filter housing (13).

According to a more preferred embodiment at this time, the above-described infusion liquid filter medium 15

A filter plate 24 (for example, formed of stainless steel so as to have durability and corrosion resistance), which is mounted on the outlet side of the injection liquid injection hole 10 and in which the target material passage hole 14 is perforated;

And a cylindrical filter plate support 20 which is supported so as not to rotate the filtration plate 24 and has a coupling hole 20b corresponding to the coupling piece 17a at the upper end of the supporter 17, .

A first O-ring 25 for preventing the infusion liquid injected into the injection solution inlet 10 from leaking through a clearance between the filter plate support 20 and the first filter housing 13;

A second O-ring (not shown) for preventing the infusion liquid that has passed through the infusion liquid filtering material 15 from leaking through a gap between the engaging hole 20b of the filter plate support 20 and the engaging piece 20b of the supporter 17 26).

The second filter housing 19 is formed at an outer circumference at an equal interval in the circumferential direction and is held by the second filter housing 19 with respect to the first filter housing 13 by grasping the outer periphery of the second filter housing 19. [ And a non-slip protrusion 29 for preventing slippage when joining or separating the non-slip protrusion 29. [

The engaging groove 24a is formed at the edge of the filter plate 24 and corresponds to the engaging groove 13a formed in the filtration space of the first filter housing 13 and corresponds to the engaging groove 24a. Is formed to face the upper surface of the filter plate support 20,

When the injection liquid is injected into the injection liquid filter material 15 through the injection liquid injection hole 10 through the injector, the engagement grooves 24a of the filter plate 24 are inserted into the engagement protrusions 20a, So as not to rotate.

The diameter of the perforated hole may vary depending on the type of the target material to be extracted. For example, when the diameter of the target material passage hole 14 is 80 μm or less, the target material can not be smoothly permeated. On the other hand, when the diameter of the target material passage hole 14 is 200 μm or more, , Impurities) can be transmitted, which may result in lower reliability.

The first filter housing 13 is formed in the circumferential direction on the outer periphery of the supporter 17 and is provided inside the first filter housing 13 so as to engage the engaging piece 17a at the upper end of the supporter 17 with the engaging hole 20b of the filter plate receiving hole 20. [ And a wing-shaped guide 17b for preventing the wing of the supporter 17 inserted into the wing guide 17b.

That is, the flange 17c of the supporter 17 is seated on the second filter housing 19 in order to engage the engaging piece 17a of the supporter 17 with the engaging hole 20b of the filter plate support 20 It is possible to prevent the supporter 17 from being shaken by the wing-shaped guide 17b formed on the outer periphery of the supporter 17 when the first filter housing 13 is inserted into the first filter housing 13. [

The coupling piece 17a on the upper end of the supporter 17 can be easily coupled to the coupling hole 20b of the filter plate supporting hole 20. [

Hereinafter, the use of the injection liquid filtration filter for a medical infusion device according to one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in Figs. 1 to 4, an injection liquid filter material 15 (hereinafter, referred to as " injection liquid filter material ") 15 comprising a filter plate 24 of a metal plate material in which a target material passage hole 14 is perforated and a cylindrical filter plate support 20 for supporting the filter plate 24 Is installed in the filtration space 12 formed in the first filter housing 13.

At this time, the infusion liquid to be injected onto the infusion liquid filter material 15 through the syringe by the first O-ring 25 mounted on the mutual contact surface of the filter plate support 20 and the first filter housing 13, The gap between the first filter housing 20 and the first filter housing 13 can be sealed.

The outer periphery of the second filter housing 19 is gripped by the second filter housing 19 while the flange of the supporter 17 is accommodated in the second filter housing 19, (18) to the first threaded portion (11) of the corresponding first filter housing (13).

At this time, the second filter housing (19) can be easily fastened to the first filter housing (13) by the non-slip protrusion (29) formed to protrude from the outer periphery of the second filter housing (19).

As a result, the engagement piece 17a at the upper end of the supporter 17 is engaged with and supported by the engagement hole 20b of the filter plate support 20 so that the injection liquid filter material 15 is detached from the filtration space 12 .

At this time, the infusion liquid, which has passed through the infusion liquid filter material 15 by the second O-ring 26 mounted between the coupling hole 20b of the filter plate support 20 and the coupling piece 20b of the supporter 17, It is possible to prevent the liquid from leaking to the outside of the infusion liquid discharge hole 16 of the injection port 17.

According to the infusion filtration filter for a medical infusion device configured as described above, a target material containing stem cells, which is discharged from a syringe detachably coupled to the upper end of the first filter housing 13, .

The target material injected into the injection liquid injection hole 10 is passed through the target material through hole 14 punctured by the filter plate 24 of the injection liquid filter material 15 and then passed through the supporter 10 communicated with the injection liquid injection hole 10, (16) of the injection port (17).

That is, a target material such as stem cells in the infusion liquid that has passed through the infusion liquid injection hole 10 passes through the target material through-hole 14 punctured to a fine size on the filter plate 24 of the infusion liquid filter material 15, And drops onto the liquid discharge hole 16. On the other hand, impurities such as lumps in the injection liquid that has passed through the injection liquid injection hole 10 can not pass through the target material passage hole 14 of the filter plate 24 and are thus filtered.

In this case, the injection liquid injected onto the injection liquid filter material 15 is mixed with the first O-ring 25 mounted on the mutual contact surface of the filter plate support 20 and the first filter housing 13 forming the injection liquid filter material 15, The first filter housing 13 can be prevented from leaking to the outside of the first filter housing 13 through the clearance between the filter plate support 20 and the first filter housing 13. [

The infusion liquid that has passed through the infusion filtration media 15 is supplied to the supporter 17 by the second O-ring 26 mounted between the coupling hole 20b of the filter plate support 20 and the coupling piece 20b of the supporter 17. [ It is possible to prevent leakage to the outside of the injection liquid outlet 16 of the injection port 17.

On the other hand, when the injection liquid is supplied to the injection liquid filter material 15 by the syringe because the filter plate 24 of the injection liquid filter material 15 is made of stainless steel to ensure durability and corrosion resistance, The diameter of the target material passage hole 14 through which the target material of the injection liquid is permeated can be kept constant without being damaged.

As described above, the lumps can be filtered by the filter plate 24 in the injection liquid introduced into the injection liquid injection hole 10 by the injector, and only the target substance can be passed.

Therefore, the concentration of the target substance of the stem cells injected into the human body through the filtration plate 24 and the infusion liquid discharge hole 16 of the supporter 17 can be kept constant.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the disclosure as defined in the following claims. As will be understood by those skilled in the art.

10; Injection fluid injection hole
11; The first threaded portion
12; Filtration space
13; The first filter housing
14; Target material through hole
15; Injection solution filter media
16; Injection fluid discharge hole
17; supporter
18; The second threaded portion
19; The second filter housing
20; Filter plate support
24; Filtration plate
25; First O-ring
26; Second O-ring
29; The non-slip projection

Claims (5)

A first filter housing through which an injection solution injection hole is formed, a first screw portion is formed on an outer peripheral side of the first filter housing, and a filtration space for filtering the injection solution is formed;
An injection liquid filter material which is seated in the filtration space and which forms a target material through hole for filtering a lump of an arbitrary size of the injection liquid and transmitting only a target material;
A supporter for penetrating the infusion liquid discharge hole communicating with the infusion liquid infusion hole and preventing the infusion liquid filter material mounted on the filtration space from being squeezed out;
A second threaded portion corresponding to the first threaded portion is formed on the inner circumference of the first filter housing and a flange of the supporter is screwed on the first and second threaded portions to prevent the supporter from being detached from the first filter housing And a second filter housing, the injection filter filtration filter comprising:
The infusion fluid filter medium
A filter plate mounted on an outlet side of the injection liquid injection hole, the target substance passage hole being perforated; And a cylindrical filter plate support hole which is supported so as not to rotate the filtration plate and which has an engagement hole corresponding to the engagement piece at the upper end of the supporter,
And a latching protrusion corresponding to the engaging groove formed in the filtration space of the first filter housing is formed to face the upper surface of the filter plate support, Wherein when the injection liquid is injected into the injection liquid filter material through the liquid injection hole, the engagement groove of the filter plate is concavely and reliably coupled to the engagement protrusion coupled to the engagement groove, so that the injection liquid filter is not rotated. filter. delete The method according to claim 1,
A wing-like guide formed in a circumferential direction on an outer circumference of the supporter, for preventing shaking of the supporter inserted into the first filter housing to engage a coupling piece on an upper end of the supporter with a coupling hole of the filter plate support; Further comprising: an injection port for injecting fluid into the medical injection device. delete The method according to claim 1,
Wherein the second filter housing is formed with an equal interval in the circumferential direction at an outer periphery of the second filter housing, and when the second filter housing is engaged with or separated from the first filter housing by grasping the outer periphery of the second filter housing, And a non-slip protrusion for preventing the fluid from entering the medical fluid injecting device.

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